Abstract
Soybean is a globally important crop, especially in tropical regions, where its high productivity is linked to the adoption of advanced cultivation technologies. Seeds are key to this process, acting as the main vehicle for transferring innovations to the field. However, variability in physiological seed quality can affect uniform seedling establishment and crop yield. In this context, seed priming with potassium nitrate (KNO₃) has been studied as a technique to enhance germination by activating pre-germinative metabolism without root protrusion. KNO₃ acts both as a nutrient and a signaling molecule. This study evaluated the effect of priming with KNO₃ (0%, 1.0%, and 1.5%) on soybean seeds of high, medium, and low physiological quality. Seeds were soaked in KNO₃ solutions for 12 h, and several parameters were analyzed: root protrusion, germination rate, speed of germination, cold tolerance, seedling length, and shoot/root biomass. Results showed that priming was particularly beneficial for low-quality seeds, improving germination, cold tolerance, and biomass. Medium-quality seeds showed reduced germination at 1.5% KNO₃, while high-quality seeds responded positively in root biomass at the same concentration. In general, priming helped reduce physiological differences among seed lots, especially benefiting those with lower initial quality.
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Claims 6
Claim · model-written summary
Priming improved germination in low-quality soybean seeds.
- Taxon
- soybean
Glycine maxe0 - Material
- low-quality seedse1
- Treatment
- priminge1
- Outcome
- germinatione1
- Direction
- improvinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on soybean seeds of high, medium, and low physiological quality”
e1“priming was particularly beneficial for low-quality seeds, improving germination, cold tolerance, and biomass”
Claim · model-written summary
Priming improved cold tolerance in low-quality soybean seeds.
- Taxon
- soybeanGlycine maxe0
- Material
- low-quality seedse1
- Treatment
- priminge1
- Outcome
- cold tolerancee1
- Direction
- improvinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on soybean seeds of high, medium, and low physiological quality”
e1“priming was particularly beneficial for low-quality seeds, improving germination, cold tolerance, and biomass”
Claim · model-written summary
Priming improved biomass in low-quality soybean seeds.
- Taxon
- soybeanGlycine maxe0
- Material
- low-quality seedse1
- Treatment
- priminge1
- Outcome
- biomasse1
- Direction
- improvinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on soybean seeds of high, medium, and low physiological quality”
e1“priming was particularly beneficial for low-quality seeds, improving germination, cold tolerance, and biomass”
Claim · model-written summary
At 1.5% KNO₃, germination fell in medium-quality soybean seeds.
- Taxon
- soybeanGlycine maxe0
- Material
- Medium-quality seedse1
- Treatment
- 1.5% KNO₃e1
- Outcome
- germinatione1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on soybean seeds of high, medium, and low physiological quality”
e1“Medium-quality seeds showed reduced germination at 1.5% KNO₃”
Claim · model-written summary
At 1.5% KNO₃, root biomass responded positively in high-quality soybean seeds.
- Taxon
- soybeanGlycine maxe0
- Material
- high-quality seedse1
- Treatment
- 1.5% KNO₃e2
- Outcome
- root biomasse1
- Direction
- positivelye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on soybean seeds of high, medium, and low physiological quality”
e1“high-quality seeds responded positively in root biomass at the same concentration”
e2“1.5% KNO₃”
Claim · model-written summary
Priming reduced physiological differences among soybean seed lots.
- Taxon
- soybeanGlycine maxe0
- Treatment
- priminge1
- Outcome
- physiological differences among seed lotse1
- Direction
- reducee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on soybean seeds of high, medium, and low physiological quality”
e1“priming helped reduce physiological differences among seed lots”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.